Chief Ghalib of Hail

Chief Ghalib of Hail (736-) was the spymaster of the Abbasid Caliphate under Caliph al-Mansur.

Biography
Ghalib was from the Banu Tayy, a tribe of Sunni Muslim Bedouin. He was the chief of Hail (present-day Hail Province, Saudi Arabia), and he became the spymaster of the Abbasid Caliphate under al-Mansur.